Delete node does not work if used from a method

## Which Plugin?
python-scripting-plugin

## Expected Behavior
del statement work from methods as well

## Current Behavior
Using del statement works well when issued from the console, but does not have any effect, when used inside of a method.

## Possible Solution

## Steps to Reproduce

def removeNodes()
for node in g.nodes:
del node

removeNodes()

The above statement should result in all nodes removed from the graph. Instead, it has no effect.
As far as I know, the plugin does not give any other solution for removing nodes.

I tried
g.nodes.remove(...)

but couldn't figure out if this would work with any key.

## Context

I can't use python scripts solving complex solutions. One has to always copy/paste scripts into console.

## Your Environment

* Gephi Version used: Gephi 0.9.7 202208031831
* Plugin Version used: 0.9.2
* Operating System: Windows 8.1